حساب دیفرانسیل توابع چند متغیره فازی و کاربرهای آن در معادلات دیفرانسیل با مشتقات جزئی فازی
عنوان اصلي به زبان ديگر
Differential calculus of fuzzy multi-variable functions and its applications to fuzzy partial differential equations
نام نخستين پديدآور
/صنم پرویزی
وضعیت نشر و پخش و غیره
نام ناشر، پخش کننده و غيره
: علوم ریاضی
تاریخ نشرو بخش و غیره
، ۱۳۹۸
نام توليد کننده
، راشدی
مشخصات ظاهری
نام خاص و کميت اثر
۸۹ص
یادداشتهای مربوط به نشر، بخش و غیره
متن يادداشت
چاپی - الکترونیکی
یادداشتهای مربوط به پایان نامه ها
جزئيات پايان نامه و نوع درجه آن
دکتری
نظم درجات
ریاضی کاربردی
زمان اعطا مدرک
۱۳۹۸/۰۴/۱۹
کسي که مدرک را اعطا کرده
تبریز
یادداشتهای مربوط به خلاصه یا چکیده
متن يادداشت
In real world, uncertainty are observed in phenomena such as string vibration, fluid temperature changes, traffic problems and population dispersion, and so on involved. A set of mathematical models governing these fuzzy phenomena are fuzzy partial differential equations. For this purpose, in this thesis, we deal with differential calculus of multi-variable functions with uncertain parameters and its application to fuzzy partial differential equations. Because directional derivatives play crucial role in the calculus of the multi-variable functions, we first, introduce the fuzzy directional derivative and investigate the uncertainty of a fuzzy multi-variable function in different directions. Then, the rules related to the directional derivatives of summations, H-difference of two fuzzy multi-variable functions are demonstrated. Since, Greens first identity have interesting applications in partial differential equations, the remainder of the thesis deals with the expression of Greens first identity in fuzzy state, which has been used to prove the accuracy of this equation in relation to fuzzy directional derivatives. One of the other applications of directional derivatives appears in Neumann boundary value problems, which is examined for the similar problems with uncertain. This problem in this thesis by expressing an applied example of this type of problems is realized. Finally, in this thesis, using the concepts of strongly generalized derivative, the fuzzy wave equation is investigated and different forms of the solution are presented according to the type of the involving derivatives
عنوان اصلی به زبان دیگر
عنوان اصلي به زبان ديگر
Differential calculus of fuzzy multi-variable functions and its applications to fuzzy partial differential equations
نام شخص به منزله سر شناسه - (مسئولیت معنوی درجه اول )